We have been wracking our brains trying to remember. I think the name of the hotel was Hotel Bertran. I honestly don't remember the cost per night. We were trying to find some place conveniently located to mass transportation and low in price. It fit both of those bills and the staff there was very accomodating. We met some ladies from the USA there and they told us that they go to Barcelona every year and always stay there.
Good luck and have fun!